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Tobii Glasses 2 – The next generation of mobile eye tracking May 20, 2014

Posted by Jon Ward in eye tracking, Glasses, Technology, Tobii, Updates, Usability & UX.
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Today Tobii and Acuity are proud to announce the next generation worn eye tracking system. The Glasses 2 platform succeeds the hugely popular Tobii Glasses and is the culmination of years of research and development, interviewing and understanding customer needs and takes advantage of the very latest technological developments.

There are several key issues raised when we discuss glasses based eye tracking systems with our clients :

  1. Does the frame feel natural and does it interfere with peripheral vision?
  2. What is the field of view of the system, can I track everything the customer looks at?
  3. What is the glasses slip or they move them?
  4. Can I read what they are reading?
  5. Can I watch what they do during the testing, like I do with my screen based eye tracker?

To answer question 1 take a look at the image below, showing the new Glasses 2 frame, the arms and design are very similar to a normal pair of spectacles, the lenses are clear, with no large frame to restrict vision or blinker you into looking forward. The eye cameras are mounted very discreetly in the arms reaching down from the bridge, so not only are they a clear and crisp design, they don’t obscure your field of view, don’t blinker your peripheral vision (essential in driving / sports / shopper studies) but the user will also be less conscious about wearing the frame in public, meaning more naturalistic behaviour.

Glasses 2

So we move onto the field of view of both the scene camera and the eyetracking data. Until now mobile eye tracking platforms have used 1 or 2 cameras (either monocular or binocular) to track the users eyes, Tobii have gone with 4 cameras, two per eye and the benefits are immediately obvious. By having two cameras per eye you instantly have a much wider degree of movement on each eye that can be tracked, not only that but by using Tobii’s patented 3D eye modelling the system can also compensate for slippage of the frame – something that has been a curse of eye tracking studies when shoppers move the frame, sports people move quickly or when testing with children who interfere with the frame. Of course being able to track a wide range of movement is not good unless we can visualise the data on the scene camera video, and here we see a huge 675% increase in the number of pixels over the Glasses 1 platform, meaning that the camera is running at a HD resolution of 1920×1080 pixels. To ensure that the field of view that is tracked maximises the rest of the platform, the camera field of view has been vastly improved to give 90 degrees diagonal FOV, around 25-30% larger our competitors products, the un-obscured frame also means that users have a visual field of view of 160 degrees – so testing is more natural, across a wider field of view in every dimension!

Glasses 2 Image

With this increased field of view, high definition camera and dual camera binocular tracking mobile testing, packaging, reading studies and more all spring to life with the moderator being able to see every interaction, and this can also now be done live via either a cable or wireless connection to a Windows PC or tablet – opening up endless possibilities for testing, and the ultimate in flexibility. With the basic system allowing for post testing recording via the recording device the entry price point is incredibly attractive, and users can upgrade the system as their needs evolve.

Glasses 2 Side

So the 5 key questions we get asked are all ticked off and Tobii haven’t stopped there, there is a new gaze mapping platform allowing for aggregated data across multiple participants, visual and statistical outputs and A/B comparison testing. There is also of course a microphone to record user audio, the scene camera has been angled to ensure that close interactions are captured, a gyroscope and accelerometer embedded for future development and interactions and of course world class eyetracking accuracy and precision!

We are expecting to ship units in October so please contact us to arrange a demo or for more details or visit http://www.tobiiglasses.com.

Glasses 2 Spec

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